78 



SPRAYING CROPS 



brown color with black specks in the middle. The 

 affected portions enlarge, and finally the whole leaf 

 becomes diseased and falls off. The red spots also 

 appear upon the fruit ; the skin becomes much rough - 

 ened and finally splits open in long cracks. 



Remedies — Spray twice with the 50 or 60-gallon 

 formula of the Bordeaux mixture, applying first about 

 one month after the blossoms fall, and again a month 

 later. If more than two applications of the Bordeaux 

 mixture are made after blooming there is danger of 



Quince Leaf Blight 



giving the fruit a russet appearance. In case of early 

 pears only one application should be made after 

 blooming. If late applications are made the copper 

 carbonate or some similar fungicide should be used. 

 The effect of treatment with the Bordeaux mixture, as 

 shown in one of I\Ir Galloway's experiments, is illus- 

 trated on page 134. 



By adding an arsenical to the Bordeaux mixture, 

 both insect and fungus injuries will be prevented. 



The Pear Scab is a disease verv similar to apple 

 scab, the fungus, in fact, being believed by many bot- 



